But it has a large nervous system in a range comparable to vertebrates.

但有庞大神经系统，范围可以跟脊椎相当。

But, of the vertebrates unpredictable Nature selected only snakes (and one lizard).

然而，在脊椎中，大自然神秘模测地只选择了蛇（还有一种蜥蜴）。

Cephalopods may have evolved complex brains long before our vertebrate relatives.

头足类或许比我们脊椎近亲更早演化出复杂脑部。

Unlike most vertebrates, a sea turtle's sex is not determined by sex chromosomes.

与大多数脊椎不同，海龟性别不由性染色体决定。

And that's completely brand new to science in any vertebrate animal.

这对任何脊椎学来说，都全新发现。”

Well, just in the last century, we have lost 615 species of vertebrate animals.

就在上个世纪，我们已经失去了 615 种脊椎。

Bulkier vertebrates have to have more massive bones.

体积较大脊椎必须有更大骨骼。

But mammals are distinguished from other vertebrates by a number of shared features.

但哺乳与其他脊椎 不同之处在于以下这些共同特征。

By human standards, a few vertebrate species have incredible longevity.

按照人类标准，有一些脊椎寿命长得令人难以置信。

" That still makes the Greenland shark the longest-living vertebrate known to science."

“尽管如此，格陵兰鲨鱼仍迄今为止学界发现最为长寿脊椎。”

In vertebrates, it is composed of blood cells suspended in blood plasma.

在脊椎中，由悬浮在血浆中血细胞组成。

Pterosaurs were the first vertebrates to master flight.

翼龙最早掌握飞行脊椎。

Snakes are also vertebrates, which means that they have a backbone.

蛇类也脊椎，说明们有脊椎骨。

They are vertebrates, which means they have backbones, and, like mammals, they are warm-blooded.

们脊椎，也就说们有脊柱，和哺乳一样，们恒温。

That would make it the largest concentration of land vertebrates anywhere on Earth.

这地球上陆生脊椎密度最高地方。

To survive, they race to maturity, with the shortest generation time of any vertebrate.

为了活下去，们以脊椎中最短代时争先恐后地长大成熟。

Everyone knows that fish make up the fourth and last class in the vertebrate branch.

大家知道鱼类脊推门中第四纲和最后一纲。

Over the past 500 years, more than 300 species of vertebrates like these have disappeared.

但在过去500年中, 超过300种脊椎已经从地球上消失。

Now, that's incredible because snakes are of lower vertebrates.

这更加令人难以置信了，因为蛇属于低等脊椎。

Among vertebrates, we actually see the greatest size variation in the cerebellum, not the neocortex.

在脊椎中，我们实际上在小脑而不大脑皮层看到了最大尺寸变化。